Add type linting for HtPP and RzGraph.

Author: Rot127

src/lint.py

@@ -177,7 +177,7 @@ def cursor_get_comment(cursor: Cursor, *, packed: bool = False) -> Optional[str]
         return comment
 
     # Check pointer (or lack of) and space between pointer
-    if typeref_spelling in {"RzList", "RzListIter", "RzPVector", "RzGraph"}:
+    if typeref_spelling in {"RzList", "RzListIter", "RzPVector"}:
         if comment[-2] != "*":
             warn(f"Type comment at {stringify_location(cursor.location)} lacks pointer")
         elif comment[-3] != " ":
@@ -189,8 +189,19 @@ def cursor_get_comment(cursor: Cursor, *, packed: bool = False) -> Optional[str]
             warn(
                 f"Type comment at {stringify_location(cursor.location)} should not have pointer"
             )
+    elif typeref_spelling in {"RzGraph", "HtPP"}:
+        if not re.match(r"/\*<[A-Za-z0-9]+ \*, [A-Za-z0-9]+ \*>\*/", comment):
+            if typeref_spelling == "RzGraph":
+                warn(
+                    f"Type comment at {stringify_location(cursor.location)} must "
+                    "follow exactly the pattern '/*<NodeType *, EdgeType *>*/'."
+                )
+            elif typeref_spelling == "HtPP":
+                warn(
+                    f"Type comment at {stringify_location(cursor.location)} must "
+                    "follow exactly the pattern '/*<KeyType *, ValueType *>*/'."
+                )
     elif typeref_spelling in {
-        "HtPP",
         "HtUP",
         "HtUU",
         "HtPU",